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【单选题】
在将气缸盖用螺栓固定在气缸体上,拧紧螺栓时,应采取下列方法?A.
即可
B.
由中央拧紧
C.
四周向中央，分多次拧紧
D.
由四周向中央一次拧紧
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反馈参考答案：
举一反三
【单选题】听力原文： After retiring from 30 years of teaching, I could easily have decided to sit back and relax and enjoy a peaceful retirement. But that kind of life is not for me. I just wanted to do something di...
A.
She sat back and relaxed.
B.
She decided to retire.
C.
She entered university.
D.
She worked out a new English program.
【单选题】He (could) easily (have won) a scholarship if he (would have devoted) more time to (his school work).
A.
could
B.
have won
C.
would have devoted
D.
his school work
【单选题】It cost her much to have broken the law. I wonder why she stole things ______ she could easily afford them.
A.
when
B.
unless
C.
in case
D.
so that
【单选题】I could easily have imagined her _____ him as a man of fine quality.
A.
thinking
B.
regarding
C.
talking
D.
admitting
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